Did they do anymore tests at the cardiologists are did he just look at your ECG from your drs. office???

120 bpm is fast but not that fast but it is still considered Tachycardia but unless it is symptomatic with other issues they probably wouldn't stress too much...you could have been nervous or anxious.

I know when I have had stress tests, ECG's, and heart caths, the favorite phrase from my cardiologist is "For you, everything is normal" which means that yes I have some cardiac issues but there is nothing new going on that needs to be treated at this time. So not sure if that is what your cardiolgist was saying or not since I don't know if he had done his own testing or what.